two questions about vector fields



1.
Consider two complete vector fields on R^n. Is it known if their Lie
bracket is complete?


2.
On a (finite-dimensional) connected manifold, is it known when the Lie
algebra of all vector fields that commute with a fixed vector field is
finite-dimensional?

More generally, is it known when the Lie algebra of all vector fields
V that preserve a given tensor X, in the sense that the Lie derivative
L_V X = 0, is finite-dimensional?

.



Relevant Pages

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